Choose a color theme for the interface
Adjust the text size throughout the application
Control the spacing and padding of interface elements
Your unique username cannot be changed
Email is managed through your connected accounts.
1. Of PER; Relating to PER
Save words and characters to collections for study.
Sign in or join to create a collection.
Free includes 5 owned collections.
Unlock unlimited with Pro — or remove one you've outgrown to make room.
